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Type.IsInterface Property

Gets a value indicating whether the Type is an interface; that is, not a class or a value type.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public bool IsInterface { get; }

Property Value

Type: System.Boolean
true if the Type is an interface; otherwise, false.



The ClassSemanticsMask distinguishes a type declaration as class, interface or value type.

If the current Type represents a type parameter in the definition of a generic type or generic method, this property always returns false.

This property is read-only.

The following example creates an interface, checks for the interface type, and indicates whether a class has the IsInterface property set.

using System;
// Declare an interface. 
interface myIFace
class MyIsInterface 
    public static void Main(string []args)
            // Get the IsInterface attribute for myIFace. 
            bool myBool1 = typeof(myIFace).IsInterface;    
            //Display the IsInterface attribute for myIFace.
            Console.WriteLine("Is the specified type an interface? {0}.", myBool1);
            // Get the attribute IsInterface for MyIsInterface. 
            bool myBool2 = typeof(MyIsInterface).IsInterface;    
            //Display the IsInterface attribute for MyIsInterface.
            Console.WriteLine("Is the specified type an interface? {0}.", myBool2);         
        catch(Exception e)
            Console.WriteLine("\nAn exception occurred: {0}.", e.Message);

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0